10f840014f0eeaef53721d101250db1686b5eba01ba2519f58ddc05fc2bf97c9

General

Target

document-1922515199.xls
Size

138KB
MD5

440830e3be371c53dbbe571736b105e3
SHA1

3d63c4e83ded0a6240f9270878513586aebe39e3
SHA256

497a4b4da11c775051944cf50abfb5d0af842b229a792a4167663d0bbdee25a5
SHA512

41a8f887284ee3954e6e97b43b325671b26fc4cfe5c28eec150ddb3848a51bd742bf7bde02be1a5b875e2a5d971bbba5c92e91ad0757dc78e0800c0d80e59782

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4008	580	rundll32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

580 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 580 wrote to memory of 4008 580 EXCEL.EXE rundll32.exe
PID 580 wrote to memory of 4008 580 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 580 wrote to memory of 4008	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 4008	580	EXCEL.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\document-1922515199.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/580-2-0x00007FFD37CB0000-0x00007FFD37CC0000-memory.dmp

Filesize
64KB

Download
memory/580-3-0x00007FFD37CB0000-0x00007FFD37CC0000-memory.dmp

Filesize
64KB

Download
memory/580-4-0x00007FFD37CB0000-0x00007FFD37CC0000-memory.dmp

Filesize
64KB

Download
memory/580-6-0x00007FFD37CB0000-0x00007FFD37CC0000-memory.dmp

Filesize
64KB

Download
memory/580-5-0x00007FFD5D9A0000-0x00007FFD5DFD7000-memory.dmp

Filesize
6.2MB

Download
memory/4008-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads